BOO-1137 - An extremely metal-poor star in the ultra-faint dwarf spheroidal galaxy Bootes I

Norris, John; Yong, David; Gilmore, Gerard; Wyse, Rosemary F G

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BOO-1137 - An extremely metal-poor star in the ultra-faint dwarf spheroidal galaxy Bootes I

Date

2010

Authors

Norris, John

Yong, David

Gilmore, Gerard

Wyse, Rosemary F G

Publisher

IOP Publishing

Abstract

We present high-resolution (R ∼40,000), high-signal-to-noise ratio (20-90) spectra of an extremely metal-poor giant star Boo-1137 in the "ultra-faint" dwarf spheroidal galaxy (dSph) Boötes I, absolute magnitude MV ∼ -6.3. We derive an iron abundance